/Engine/Source/Runtime/Engine/Classes/Camera/PlayerCameraManager.h
Blueprint hook to allow blueprints to override existing camera behavior or implement custom cameras. If this function returns true, we will use the given returned values and skip further calculations to determine final camera POV.
bool BlueprintUpdateCamera ( [AActor](API\Runtime\Engine\GameFramework\AActor) * CameraTarget, FVector & NewCameraLocation, FRotator & NewCameraRotation, float & NewCameraFOV )